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The North China oil field international trade drills picks the fitting Limited co***ny, is the Chinese petroleum commodity management Major industry, mainly manages three roller bits, the PDC drill bit, each kind of fishing tool, as well as petroleum geology necessary well drilling tool. Corporation initiates until now, insists throughout take the market as the guidance, take the innovation as a beginning, provides a more comprehensive product for the customer; Reduces the cost for the drilling profession. ...
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